ISO 13843:2017涉及微生物方法的表征。根据ISO 13843:2017，表征是指对可测量参数的研究，以描述该方法在一组给定条件下的性能，可描述为性能特征。ISO 13843:2017描述了可用于方法后续验证或验证的性能特征测定程序。 重点是选择性定量方法，ISO 13843:2017适用于所有类型的水。对于不基于直接显微镜计数、菌落计数或最可能数的方法，ISO 13843中所述程序的适用性: 2017年应该慎重考虑。

ISO 13843:2017 deals with characterization of microbiological methods. In terms of ISO 13843:2017, characterization means the study of parameters that can be measured to describe how the method is likely to perform in a given set of conditions, which can be described as performance characteristics. ISO 13843:2017 describes procedures for the determination of performance characteristics which can be used for subsequent validation or verification of methods. The emphasis is on selective quantitative methods and ISO 13843:2017 applies to all types of water. For methods that are not based upon direct microscopic count, colony count or most probable number, the applicability of the procedures described in ISO 13843:2017 should be considered carefully.